由 dawei
用Openni2的时候发现找不到device的问题，折腾半天解决了，mark下以备不时之需。
主要参考：
http://stackoverflow.com/questions/19938830/openni2-and-asus-xtion-pro-live-device-not-found
http://stackoverflow.com/questions/17181073/ubuntu-12-04-libudev-dev-wont-install-because-of-dependencies/
主要是由于libudev-dev的问题，
Same issue with Structure Sensor and PrimeSense on 14.04 32bit and 64bit,showing as Device ID 1d27:0600 ASUS
Solution was to create a symbolic link from the libudev.so.0 file it seems OpenNI2 is expecting to find.
Ubuntu 14.04
$ sudo ln -s /lib/x86_64-linux-gnu/libudev.so.1.3.5 /lib/x86_64-linux-gnu/libudev.so.0
Ubuntu 15.04
$ sudo ln -s /lib/x86_64-linux-gnu/libudev.so.1.6.2 /lib/x86_64-linux-gnu/libudev.so.0
Then just run your ./NiViewer and smile.
I followed directions here: http://codeyarns.com/2015/09/28/no-devices-found-error-with-openni2/